Re-enable test 983 with speed-profile

We make sure to fixup dex files in all situations before passing it to
JVMTI agents. This means that dexlayout won't break this test anymore.

Test: stress --cpu 60; \
      while ./test/run-test --host --random-profile 983; do; done

Change-Id: I047ffcbbba51db4c7bf5c22e482bd5864bc8b6d1
diff --git a/test/knownfailures.json b/test/knownfailures.json
index a7b28de..deac56d 100644
--- a/test/knownfailures.json
+++ b/test/knownfailures.json
@@ -369,8 +369,7 @@
     },
     {
         "tests": ["629-vdex-speed",
-                  "634-vdex-duplicate",
-                  "983-source-transform-verify"],
+                  "634-vdex-duplicate"],
         "description": ["Profile driven dexlayout does not work with vdex or dex verifier."],
         "variant": "speed-profile"
     }